from django.db import models

class User(models.Model):
    ON = 1
    OFF = 2
    STATUS_CHOICES = {
        (ON,'正常'),
        (OFF, '锁定')
    }
    class Meta:
        verbose_name_plural = '用户列表'
    user_name = models.CharField(max_length=30,unique=True,verbose_name="用户名")
    pwd = models.CharField(max_length=200,verbose_name="密码")
    status = models.IntegerField(choices=STATUS_CHOICES,default=ON,verbose_name="状态")
    phone = models.CharField(max_length=30,verbose_name="手机号")
    list_display_links = ['user_name']
    def __str__(self):
        return self.user_name
class Address(models.Model):
    class Meta:
        verbose_name_plural = '收货地址'
    user = models.ForeignKey("User",on_delete=models.CASCADE)
    user_name = models.CharField(max_length=20,unique=True)
    phone = models.CharField(max_length=30)
    address = models.CharField(max_length=200,null=False)
    is_default = models.IntegerField(default=1)
    def __str__(self):
        return self.address + "(" + self.user_name + ")收，联系电话：" + self.phone

class Goods(models.Model):
    class Meta:
        verbose_name_plural = '商品表'
    good_name = models.CharField(max_length=30)
    img_url = models.ImageField(upload_to='img')
    price = models.IntegerField()
    intro = models.TextField()
    type = models.ManyToManyField("Type",null=True)
    K = "克"
    J = "斤"
    G = "个"
    UNIT_CHOICES = {
        (K,"克"),
        (J,"斤"),
        (G,"个")
    }
    unit = models.CharField(choices=UNIT_CHOICES,default="克",max_length=10)
    objects = models.Manager()
    def __str__(self):
        return self.good_name

class Type(models.Model):
    class Meta:
        verbose_name_plural = '商品分类'
    type_name = models.CharField(max_length=30,unique=True)
    def __str__(self):
        return self.type_name

class Cart(models.Model):
    class Meta:
        verbose_name_plural = '购物车'
    num = models.IntegerField(verbose_name="购买数量")
    user = models.ForeignKey("USer",on_delete=models.CASCADE)
    goods = models.ManyToManyField(Goods)

class Order(models.Model):
    WFK = 1
    YFK = 2
    YFH = 3
    YSH = 4
    ORDER_STATUS_CHOICES = {
        (WFK, "未付款"),
        (YFK, "已付款"),
        (YFH, "已发货"),
        (YSH, "已收货")
    }
    HUO = 1
    WX = 2
    ZFB = 3
    YIN = 4
    PAY_STATUS_CHOICES = {
        (HUO,"货到付款"),
        (ZFB,"支付宝"),
        (WX,"微信支付"),
        (YIN,"银行卡支付")
    }
    class Meta:
        verbose_name_plural = '订单'
    order_no = models.CharField(max_length=30,null=True,verbose_name="订单号")
    status = models.IntegerField(choices=ORDER_STATUS_CHOICES,default=WFK,verbose_name="订单状态")
    time = models.DateTimeField(auto_now_add=True,verbose_name="下单时间")
    user_name = models.CharField(max_length=20,null=True,verbose_name="联系人")
    phone = models.DecimalField(max_digits=12,decimal_places=0,null=True,verbose_name="联系电话")
    address = models.CharField(max_length=200,verbose_name="联系地址",null=True)
    user = models.ForeignKey("User",on_delete=models.CASCADE,verbose_name="用户名",null=True)
    total_price = models.IntegerField(verbose_name="实付款",null=True)
    pay_status = models.IntegerField(choices=PAY_STATUS_CHOICES,default=HUO,verbose_name="付款方式")

class OrderDatail(models.Model):
    class Meta:
        verbose_name_plural = '订单详情'
    good_name = models.CharField(max_length=30)
    price = models.IntegerField()
    num = models.IntegerField()
    img_url = models.CharField(max_length=100)
    total_price = models.IntegerField()
    order = models.ForeignKey("Order",on_delete=models.CASCADE)

